91481442 has 32 divisors (see below), whose sum is σ = 205607808. Its totient is φ = 26923776.

The previous prime is 91481413. The next prime is 91481443. The reversal of 91481442 is 24418419.

It is not an unprimeable number, because it can be changed into a prime (91481443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23703 + ... + 27290.

It is an arithmetic number, because the mean of its divisors is an integer number (6425244).

Almost surely, 2^91481442 is an apocalyptic number.

91481442 is an abundant number, since it is smaller than the sum of its proper divisors (114126366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91481442 is a wasteful number, since it uses less digits than its factorization.

91481442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51034.

The product of its digits is 9216, while the sum is 33.

The square root of 91481442 is about 9564.5931434641. The cubic root of 91481442 is about 450.5859724408.

The spelling of 91481442 in words is "ninety-one million, four hundred eighty-one thousand, four hundred forty-two".